Machine for mixing liquid and powdered materials.



S. A. BIGELOW. MACHINE FOR MIXING LIQUID AND POWDERED MATERIALS.

7 APPLIOATION FILED AUG. 29, 1911. v 1,027, 1 72. Patented May 21, 1912.

-g\ \rlllllllllu UNITED STAWENT OFFICE.

SAMUEL A. BIGELOW, or BOSTON, MASSACHUSETTS, 'ASSIGNOR To SUMNERMANUFAC- TUBING GOMPANYEVOF BOSTON, MAS$AGHUSETTS, A. COREOBA ION OEMASSACHU- v MACHINE FOR MIXING LIQUID AND POWDERED MATERIALS.

Specification of Letters Patent. Patented May 21, 1912.

Application filed August 29, 1911. Serial No. 646,753.

To'aZZ whom it may concern:

Be it known that I, SAMUEL A. BIGELOW,

a citizen of the United States of America,

ployed for securing the mixingrecept-acle.

to its rotatable support, but so far as I am aware it has always beennecessary to manipulate such devices by hand, to unlock or unlatch them,after'the machine has been stopped, in order to release and disengagethe receptacle.

My improvements consist in projecting parts or lugs secured to theoutside of the receptacle, or to its support, preferably to the former,and in that case, correspondingly spaced ears or projections secured tothe support, which ears are provided with slots or sockets adapted toreceive and engage the lugs on the receptacle when it is placed upon thesupport and one is rotated in relation to the other. The preferableconstruction is, to arrange the lug sockets on the support, so that whenit is turned in a direction to operate the mixer the lugs on thereceptacle will enter the slots and automatically engage them, thussecuring the receptacle to its support without hand manipulation of anylocking devices, which engagement will continue while the machine isturned in the operative direct-ion and when the machine is reversed, thereceptacle and its support may be automatically disengaged by a smallamount of resistance upon the receptacle, such as that caused by thematerial therein resisting the action of the mixing blade, thus causinga movement of the support in the opposite direction, in relation to thereceptacle, and thereby withdrawing the lugs from the slots; also inorder to produce a very easily running machine, especially when operatedby hand, I provide antifriction devices such as ball bearings, betweenthe said support and its sustaining frame.

In the drawings, I have illustrated myimprovements as applied to amachine commonly. known as a dough orbread mixer, wherein,

Figure 1, is an elevation of the machine with the receptacle, and one ofits attached lugs and the rotatable support and one of its lug-engagingears, in section on line 11, Fig. 2; Fig. 2, is a plan, viewed fromabove, the support, its lug-engaging ears and the ball-bearings beingindicated in dotted lines; Fig. 3, is a detail plan of one of the earson the support, with the lug-engagingslot in section, and Fig. 4, is adetail of the same parts in elevation.

Referring to the drawings and indicating the several parts of themachine by letters;

It is the receptacle for the material to be mixed, S, the rotatablesupport upon which the receptacle rests and to which it is secured bythe engagement and interlocking.

of the lugs Z, on the receptacle R, with the slots m, in the upwardlyprojecting portions 0, on the ears 6, of the supports F, is the frame ofthe machine, which may be secured to a table or other article a by aclamp screw G.

Upon the under side of the support S, a circular beveled gear g, isformed, with which the beveled pinion p meshes. This pinion is keyed tothe crank shaft g, which has a crank handle it upon its outer end. Inthe under surface of the support S, is an annular groove a, whichcontains the balls 79, having a bearing upon the upper surface of a disk0? of the frame F. The support S, is centered by and turns on a spindleT, held in a socket in the frame. 1 An arm 6 extends from the frameupward I a little above the top of the receptacle R, and has adjustablyattached thereto a mixing blade N, which is normallyheldin a positionnear the bottom of the interior of the receptacle.

As illustrated, the lugs Z, are secured to the bottom of the receptacleand project radially therefrom, and the slots m, extend in a horizontalplane into the upwardly prolugs project from the support S, and allserve the same purpose and operate in the same manner. I haveillustrated three projecting ears on the support S, as being mostconvenient and amply sufficient to sustain and hold the receptacle inproper position.

In the machine illustrated the operative direction for turning it isindicated by the arrows in Figs. 2 and 3, so that as it turns the slotsin the ears 6, move over the lugs Z and tend constantly to hold the lugstherein and cause the receptacle to turn with the support, thus forcingthe material, within thereceptacle, against the stationary mixing bladeN. IVhen the support S, is turned in a direction opposite to thatindicated by the arrow, the lugs will move out of the slots m in theears 0, as soon as the resistance of the material against the bladewithin the receptacle becomes sufiiciently great to overcome thefriction between the parts.

I claim 1. In a machine for kneading or mixing liquid and powderedmaterial, such as flour, a mixing receptacle having a plurality ofexteriorly projecting lugs, a support for the receptacle provided withprojecting ears having horizontally open slots which receive and engagethe lugs on the receptacle when the support is given a rotary movementin relation to the receptacle, in a direction to eiiect the mixing andwhich release the lugs when the rotary movement is in the otherdirection, means to rotate said support, and a mixing blade supportedindependently of the receptacle and within it, near the bottom.

2. In a machine of the class described, means for securing the mixingreceptacle on its rotatable support and releasing it therefrom,consisting of a plurality of lugs upon the receptacle and ears upon thesupport having horizontally open slots to receive, the lugs, said lugsand ears being respectively coordinately located on said receptacle andsupport, and means to rotate the support, by which the said slots willengage the lugs when the support is rotated, in relation to thereceptacle, in a direction to effect the mixing, and will disengage thelugs when the support is rotated in the other direction.

' SAMUEL A. BIGELOIV. \Vitnesses FLORENCE A. CoLLINs, JOSEPHINE H. RYAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

- Washington, D. G.

